User blog comment:MeeperCreep/Who's my better Mega Pokemon?/@comment-28262185-20170713144454

Look, in my opinion, Gengar has more chance for getting a critical hit more than Lucario. But now that you are speaking of megas, Lucario may be the best choice. Mega Gengar has an ability that is Levitation or Move Desabler. Lucario has no effects, but Mega Lucario is the boss when is about Mega Fights (Mega Fights are fights that can be Single or Double Battles using Megas). Right now, try to upgrade your Lucario so it can learn Aura Sphere, that is one of the most powerful move of Lucario and the most effective against most types. Mega Gengarright now is better than Mega Lucario, but making Lucario learn Aura Sphere will be the best choice you will never regret.